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(11)

EP 2 533 974 A1

(12)

(43) Date of publication: 19.12.2012 Bulletin 2012/51 (21) Application number: 10844983.6 (22) Date of filing: 08.02.2010

(51) International Patent Classification (IPC):  B32B 5/02(2006.01) B32B 27/00(2006.01) (86) International application number: PCT/CN2010/000166 (87) International publication number: WO 2011/094898 (11.08.2011 Gazette 2011/32)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR (71) Applicant: W. R. Grace & Co.-Conn Columbia, MD 21044 (US)	(72) Inventors: WIERCINSKI, Robert, A. Lincoln, MA 01773 (US) DING, Hongmei Beijing 100085 (CN) CAO, Xia Acton, MA 01720 (US) (74) Representative: Benson, John Everett et al J A Kemp 14 South Square Gray's Inn London WC1R 5JJ London WC1R 5JJ (GB)